00:00
3
4
9
2
1
6
9
7
2
5
3
9
2
7
5
9
8
4
7
5
1
1
2
5
2
5
1
8
7
6
3
2025-05-04(Intermediate) Puzzles
Enjoy reasoning while solving
Proceed logically without rushing.
Tips for Solving Sudoku
- Start with squares with fewer numbers: Begin with rows, columns, or blocks that already have more numbers filled; fewer candidates make it easier to solve.
- Pencil marks (notes): For beginners, write possible numbers in small font in empty squares for reference.
- Review: If stuck, check for duplicate numbers or rule violations.
- Basic rule: Do not repeat the same number in the same row, column, or 3x3 block.